How to Start a Medical Billing Company

How to Start a Medical Billing Company (2026 Guide)

Short answer

Starting a third-party medical billing company means setting up as an LLC, getting an EIN and a Type 2 organizational NPI, signing business associate agreements with every provider client, and enrolling with payers and a clearinghouse before you can transmit a single claim. No state or federal law requires a billing-specific certification to bill, but credentials from AAPC or HBMA differentiate you with prospective clients and signal competence to payers. The market is large and fragmented: the Healthcare Business Management Association represents nearly 300 RCM firms covering more than 47,000 employees, and that is a fraction of the third-party billing landscape. Most new billing companies win their first clients through referrals from practice consultants, EHR vendors, and credentialing firms, not advertising. Plan for a six-to-twelve month ramp before the operation is cash-flow positive.

What is the market opportunity?

Third-party medical billing is a durable services market. Independent practices, specialty groups, and outpatient clinics routinely outsource billing because building and retaining an in-house RCM team is expensive and the payer landscape keeps changing. Billing companies that serve multiple practices have structural advantages in staffing, payer knowledge, and tool cost-sharing that a single-practice billing department cannot replicate.

The market is broad and fragmented. There are a small number of large national companies, a larger number of regional firms, and thousands of small operations focused on one or two specialties. Differentiation usually comes from specialty depth, responsiveness, and transparent reporting, not price alone.

Key facts about the market:

• The HBMA membership spans nearly 300 firms representing more than 47,000 employees, per HBMA's own membership statistics
• Most third-party billing companies serve between 5 and 30 provider clients; very few operate at scale
• Specialty focus (behavioral health, chiropractic, pain management, podiatry) is a common early positioning choice because payer rules are specialty-specific and deep expertise is a real differentiator

What business and legal setup is required?

The typical structure for a new billing company is an LLC, formed in your state of operation. An LLC provides liability separation and is straightforward to maintain. Multi-member LLCs may prefer a more formal operating agreement from the start. Consult a business attorney for entity choice, especially if you plan to take on partners.

After formation, you need an EIN (Employer Identification Number) from the IRS. The EIN is required for payer enrollment, banking, and payroll.

You will also need a Type 2 organizational NPI from NPPES. Type 2 NPIs identify the billing organization as the submitting entity on claims. The application is free and processed through the CMS National Plan and Provider Enumeration System. Processing typically takes up to ten business days for a properly completed online application.

Sources: SBA.gov business structure guide, CMS NPPES

What certifications matter, and which are required?

No state or federal law requires a billing certification to operate a medical billing company. Anyone can legally start and run a third-party billing business. That said, certifications are practically important: payers and prospective clients use them as a proxy for competence, and staff certifications are a differentiator during contract negotiations.

The main credentials in the field:

Practical notes on each:

• The AAPC CPB exam is 135 questions, requires a 70% passing score, and costs $499 for two attempts. AAPC reports no minimum education requirement, though two years of billing-related experience is the practical baseline.
• The HBMA CHBME is the credential most associated with running a billing company, not just working in one. Eligibility requires 60 approved credit hours, at least 36 from HBMA-sponsored programs. The application fee for members is $350; non-members pay $700. The exam is 75 questions over two hours.
• The AMBA CMRS is an open-book exam with 16 sections; passing requires an 85% cumulative score. AMBA membership at $99 per year is a prerequisite.

None of these are legally required. All three are optional but worth considering for the credibility they carry with new clients.

Sources: AAPC CPB page, HBMA CHBME page, AMBA CMRS page

What is your status under HIPAA, and what do you need to sign?

A third-party medical billing company is a business associate under HIPAA. HHS defines a business associate as any entity that performs functions involving the use or disclosure of protected health information on behalf of a covered entity. Billing, claims processing, and payment administration are explicitly listed examples in the regulation.

This has two concrete consequences:

• You must sign a Business Associate Agreement (BAA) with every provider client before receiving any PHI. The BAA governs how you handle, protect, and return or destroy their patient data.
• You are directly subject to HIPAA's Security Rule and Privacy Rule and can be fined by HHS Office for Civil Rights in your own right, independent of your client. HHS publishes a model BAA template as a reference.

A signed BAA is not optional. Do not accept any PHI from a provider client before the BAA is in place. This is non-negotiable from day one.

Beyond the BAA, you need administrative, physical, and technical safeguards in place: access controls, encryption for PHI at rest and in transit, a breach notification procedure, and workforce training documentation. HHS guidance for business associates is at hhs.gov/hipaa.

Sources: HHS Business Associates guidance, HHS model BAA

How do clearinghouse and payer enrollment work?

A clearinghouse is the electronic intermediary between your billing company and the payers. You send claims in a standard EDI format (the 837P for professional claims, 837I for institutional), the clearinghouse validates and routes them, and the payer's response comes back through the same channel. Without clearinghouse enrollment, you cannot transmit claims electronically.

Enrollment steps for a new billing company:

• Choose a clearinghouse. Major options include Change Healthcare (now Optum), Availity, Office Ally, and Waystar. Evaluate on payer connectivity, rejection reporting quality, and cost.
• Complete clearinghouse setup with your NPI, EIN, and the payer IDs for the payers you plan to submit to.
• Enroll separately with each payer for EDI submitter status. Each payer has its own enrollment form and process. Medicare enrollment runs through the CMS Provider Enrollment, Chain, and Ownership System (PECOS) or the relevant MAC (Medicare Administrative Contractor) for the region. Private payer EDI enrollment is typically done directly with the payer or through your clearinghouse.

Enrollment timelines vary. Per CMS guidance, some Medicare-related enrollments can take up to 30 business days. Private payer enrollments typically take one to eight weeks. Plan for this time before promising a client a go-live date.

Payer enrollment is not the same as provider credentialing. You are enrolling your billing company as an authorized EDI submitter, not credentialing the rendering providers. Providers still need to be credentialed and enrolled with each payer in their own right.

Sources: CMS Electronic Billing and EDI Transactions, CMS PECOS

What software does a new billing company need?

The software stack for a billing company has three distinct layers, and conflating them is one of the most common early mistakes.

The PMS or EHR is almost always the provider's existing system. Your job is to work within it or alongside it. Most billing companies access the client's PMS directly to pull charges and post payments.

The clearinghouse sits between your billing workflow and the payers. It is not where you manage your own work.

The RCM workflow layer is the operational hub for your business: where your team works denials, tracks A/R across all your clients, posts ERAs, checks eligibility, and manages submissions. For new billing companies, this is often the last layer they think about and the first one that limits growth.

Many billing companies early on try to do RCM workflow work inside their clients' PMS systems, logging into one system per client. That approach does not scale past a handful of clients. The right tool for this layer works billing-company-first: your team, your work queues, across all your client practices in one workspace.

How should you price your services?

Three pricing models dominate the market. Each has a different risk and cash-flow profile.

Percentage of collections is the most common model for third-party billing companies. It aligns your incentives with the provider's results and is familiar to most practice administrators.

The main risk with percentage-based pricing: your revenue lags by 30-90 days depending on payer mix, and if you take on a practice with a backlogged or poorly managed A/R, you can do a lot of work before seeing meaningful collections. Pre-engagement A/R audits and clearly defined performance benchmarks in your service contract protect against this.

Per-claim pricing is less common in the US third-party billing market but is used by some high-volume, specialty-focused operations. It gives you revenue predictability but does not create the same shared-outcome relationship that most practices expect.

Sources: MGMA revenue cycle leakage benchmarks, industry rate range summary

How do you structure client contracts and protect your business?

Every provider client relationship needs two documents before any work begins: a service agreement and a signed BAA.

The service agreement should cover at minimum:

• Scope of services (which specialties, which payers, which workflow steps you own)
• Fee structure and payment terms (how collections are measured, when you invoice, net payment terms)
• Data access and data ownership (who owns the patient data; it is always the provider)
• Term and termination (notice period, what happens to open A/R at termination)
• Performance expectations and reporting cadence
• Indemnification and limitation of liability
• Dispute resolution

The BAA runs alongside the service agreement and governs PHI handling specifically. Many billing companies use separate documents; some incorporate BAA terms into the service agreement. Either approach is acceptable under HIPAA as long as all required elements at 45 CFR 164.504(e) are present.

A few practical points:

• Define who works denials and appeals, and within what timeframe. Ambiguity here causes the most client disputes.
• Include an A/R handoff clause specifying how outstanding claims are handled if either party terminates.
• Your contract should specify the filing limit windows you are responsible for. If a client delivers charges to you after the payer's timely filing deadline, that is not your write-off.

Consult a healthcare attorney to review your initial service agreement and BAA. This is a one-time cost that avoids larger problems later.

How do you get your first clients?

The first client is the hardest. Referrals from people who have already seen you work are the most effective source, which creates a bootstrapping problem when you are just starting. The answer is to get your first one or two clients through your existing network, not through marketing.

Practical first-client strategies:

• Start with someone who knows you. A practice manager, physician, or office administrator from a previous employer is the most likely first client. They already trust you.
• Partner with EHR vendors and practice management consultants. These firms constantly hear from practices that are unhappy with their billing situation. Many will refer to you if you can reliably serve their clients.
• Target practices that have no existing billing company relationship, such as a physician who is breaking out of a group practice and starting independently, or a new specialty practice that has not yet set up billing.
• Join HBMA and list your company in their Find-a-Biller directory. Practices actively use this directory when searching for billing help.
• Pick a specialty and go deep. A billing company that clearly knows cardiology or behavioral health billing is more credible to a cardiologist or LCSW than a generalist shop.

Do not take on more clients than you can reliably serve in year one. A bad reference from an early client is much harder to overcome than slow growth.

What are the most common first-year mistakes?

The failures most billing companies hit in the first year fall into predictable patterns.

Taking on clients without vetting their A/R first. If you inherit a backlogged A/R in a percentage-of-collections model, you may work months before you see meaningful revenue. Conduct a pre-engagement A/R audit before quoting a rate.

Skipping or delaying the BAA. Some new billing companies start receiving PHI before the BAA is signed because the relationship feels informal. This is a HIPAA violation regardless of intent. The BAA must be in place before any PHI changes hands.

Underpricing to win the first client. Percentage rates set in early contracts are hard to renegotiate. Price for the true cost of the work, including denial follow-up and appeals, not just initial submission.

Managing multiple clients in multiple PMS systems with no cross-client visibility. Logging into eight separate systems to check denial status across eight clients is not a billing company, it is eight part-time jobs. The software layer that sits above the PMS and gives you a unified view across clients is what makes a billing company a real business.

Ignoring timely filing deadlines during the setup period. Payer enrollment and clearinghouse setup take weeks. Claims submitted after a payer's timely filing window are not payable. Know the deadlines for every payer your client uses before you accept their charges.

Treating HIPAA compliance as a one-time document exercise. HIPAA requires ongoing workforce training, documented security policies, and a breach response procedure. Annual review is the minimum; build it into your operations calendar.

How Medi fits a new billing company

Medi is the multi-practice RCM workspace a billing company runs claims, denials, ERA posting, and eligibility on. It is built billing-company-first: your team, your work queues, your reporting, across all your client practices in one place.

Specifically, Medi handles:

• Claims submission and status tracking across all client practices
• Denial management and appeals workflow
• ERA (835) import and line-level posting
• Eligibility and coordination-of-benefits checks
• A/R aging and work queue prioritization
• Per-practice reporting that you can share with clients

Medi does not replace the provider's EHR or PMS. It does not perform clinical coding, generate clinical documentation, submit prior authorizations, or provide scheduling. It is the operational layer that sits on top of whatever PMS your clients use and gives your team a unified workspace.

Pricing is $20 per client practice per month, with published graduated volume discounts: $20 each for practices 1-25, $15 each for practices 26-50, and $10 each for practices 51 and above (each tier applied at the marginal practice). EDI usage is billed per transaction: $0.25 for the first claim line, $0.20 for each additional claim line, $0.25 for the first paid ERA line, $0.20 for each additional paid ERA line, $0 for denied ERA lines after the first, $0.20 per eligibility or claim status check, and $1.00 for COB inquiries, insurance discovery, and attachments. Volume discounts on EDI usage are available for larger high-volume books. There is no per-provider fee and no contract. The full rate schedule is at Medi pricing.

Medi charges per client practice, not per provider. Adding providers inside a practice never changes the fee. Adding practices adds the per-practice rate, which falls as your book grows.

For a new billing company starting with one to three client practices, the per-practice model starts at $20 to $60 per month in platform cost while you build volume. That entry point is lower than a flat monthly fee and scales naturally with your work: as you add clients, the per-practice rate steps down. If you decide to migrate from another platform, Medi offers free migration with a 12-month commitment, or a one-time $100 per practice fee (capped at $3,000) on a month-to-month basis. Data export is always free with no early-termination fee.

See Medi pricing, try the pricing calculator, or read the billing company software evaluation guide. To see the product, book a demo.

When Medi is not the right fit

Medi is built for billing companies managing claims and post-service revenue cycle work across multiple provider clients. It is probably not the right tool if:

• You are a single provider practice looking for a PMS or EHR, not an RCM workflow layer
• You need clinical coding software, a charge capture system, or a prior-authorization tool; Medi does not do any of those
• Your entire operation is inside one client's PMS and you have no plans to take on additional clients
• You need a clearinghouse itself, rather than a workflow layer that connects to a clearinghouse

If you are starting a billing company and evaluating the full software stack, the billing company software evaluation guide covers how the layers fit together and what questions to ask each vendor.

Frequently asked questions

Do I need a license to start a medical billing company?

There is no federal license or certification required to operate a third-party medical billing company in the United States. Some states have specific requirements for certain types of healthcare businesses, so verify with your state's Department of Health or a local healthcare attorney before operating. What is required is business formation (LLC or equivalent), an EIN, a Type 2 organizational NPI if you are billing as an organization, clearinghouse and payer enrollment, and signed BAAs with every provider client before you receive any PHI. Professional certifications from AAPC, HBMA, or AMBA are optional but practically valuable for winning client trust. The absence of a licensing requirement does not mean there are no legal obligations; HIPAA applies to you as a business associate regardless of certification status.

How much does it cost to start a medical billing company?

Startup costs are relatively low compared to most businesses. State LLC filing fees typically run $50 to $500 depending on the state. The Type 2 NPI is free. A clearinghouse account may have a monthly fee or be transaction-based, depending on the provider you choose. Certifications are optional, but AAPC CPB exam fees are $499 for two attempts; HBMA CHBME costs $350 for members and $700 for non-members plus a $99 test fee. You will also need a HIPAA-compliant work environment (access controls, encrypted storage, audit capability), which may involve software and security costs. Budget for a healthcare attorney to review your service agreement and BAA template, typically a few hundred to a few thousand dollars depending on your market. Your largest early cost is usually your own time and foregone income during the enrollment and ramp period.

How long does it take to get paid after starting?

The timeline from signing your first client to receiving your first payment is typically 60 to 120 days, depending on how quickly you complete payer and clearinghouse enrollment, how fast the client's payers process and pay claims, and your payment terms with the client. If you are on a percentage-of-collections model, you only earn when the practice collects. Some payers pay within 14 days; others routinely take 30 to 60 days. Plan working capital to cover your operating costs for at least three to four months before the revenue becomes reliable. The most common cash flow mistake new billing companies make is signing clients without accounting for this lag.

What is a business associate agreement and why does it matter?

A Business Associate Agreement (BAA) is a written contract required by HIPAA between a covered entity (your provider client) and any vendor or contractor that handles protected health information on their behalf. As a billing company, you are a business associate the moment you receive patient data. The BAA specifies what PHI you may use and for what purposes, requires you to apply appropriate safeguards, obligates you to report breaches, and defines what happens to PHI when the relationship ends. HHS publishes a model BAA at hhs.gov as a reference. You must have a signed BAA before receiving any PHI, not after. HHS Office for Civil Rights has the authority to fine business associates directly; penalties can reach over $2 million per violation category under the HITECH Act.

What is the best specialty to focus on as a new billing company?

There is no universally best specialty, but certain specialties reward depth faster than others. Behavioral health, chiropractic, pain management, and podiatry are common entry points because they have high practice counts, distinct payer rules, and a large population of independent practitioners who are not well-served by generic billing companies. Avoid mental health billing if you are not prepared to manage the Medicaid credentialing complexity in your state. Avoid surgical billing initially if you do not have strong clinical coding knowledge, because clean claim rates depend heavily on correct procedure and modifier combinations. Whatever specialty you choose, go deep: know the common denial codes, the payer-specific rules, and the common documentation gaps. That knowledge is your actual product.

How many clients can one biller manage?

Capacity per biller varies significantly based on specialty, claim volume, denial rate, and how much of the workflow is automated or tool-assisted. A rough industry reference point is 75 to 200 providers per full-time biller for a low-complexity, high-volume specialty like primary care, and fewer for high-complexity specialties with more frequent denials and appeals. As a new billing company owner, plan conservatively: build your workflows and reporting before you staff up, and hire before you are overwhelmed rather than after. The single most common scaling failure in billing companies is taking on clients faster than the team can maintain quality on existing work.